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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 47, Iss. 18 — Jun. 20, 2008
  • pp: 3299–3306

Evaluation of centricity of optical elements by using a point spread function

Antonín Mikš, Jiří Novák, and Pavel Novák  »View Author Affiliations

Applied Optics, Vol. 47, Issue 18, pp. 3299-3306 (2008)

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Our work describes a technique for testing the centricity of optical systems by using the point spread function. It is shown that a specific position of an axial object point can be found for every optical element, where the spherical aberration is either zero or minimal. If we image such a point with an optical element, then its point spread function will be almost identical to the point spread function of the diffraction-limited optical system. This consequence can be used for testing the centricity of precisely fabricated optical elements, because we can simply detect asymmetry of the point spread function, which is caused by the decentricity of the tested optical element. One can also use this method for testing optical elements in connection with a cementing process. Moreover, a simple formula is also derived for calculation of the coefficient of third-order coma, which is caused by the decentricity of the optical surface due to a tilt of the surface with respect to the optical axis, and a simple method for detecting the asymmetry of the point spread function is proposed.

© 2008 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.4630) Instrumentation, measurement, and metrology : Optical inspection
(120.4800) Instrumentation, measurement, and metrology : Optical standards and testing
(120.4820) Instrumentation, measurement, and metrology : Optical systems
(220.1010) Optical design and fabrication : Aberrations (global)
(220.4840) Optical design and fabrication : Testing

ToC Category:
Optical Design and Fabrication

Original Manuscript: March 20, 2008
Revised Manuscript: May 7, 2008
Manuscript Accepted: May 23, 2008
Published: June 12, 2008

Antonín Mikš, Jiří Novák, and Pavel Novák, "Evaluation of centricity of optical elements by using a point spread function," Appl. Opt. 47, 3299-3306 (2008)

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